KR100484968B1 - Method for defrosting operation of air-conditioner used both cooler and heater - Google Patents
Method for defrosting operation of air-conditioner used both cooler and heater Download PDFInfo
- Publication number
- KR100484968B1 KR100484968B1 KR10-2002-0045401A KR20020045401A KR100484968B1 KR 100484968 B1 KR100484968 B1 KR 100484968B1 KR 20020045401 A KR20020045401 A KR 20020045401A KR 100484968 B1 KR100484968 B1 KR 100484968B1
- Authority
- KR
- South Korea
- Prior art keywords
- temperature
- heat exchanger
- defrosting operation
- time
- outdoor
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
본 발명은 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것으로서, 실외온도센서와 실외열교환기 온도센서가 구비되지 않은 냉난방 겸용 에어컨의 난방운전시 실외온도의 저하로 인한 실외열교환기에 형성되는 성애를 제거하기 위해 실내온도와 실내열교환기의 온도차의 변화를 감지하여 제상 진입여부를 판단하고 제상시간을 설정하도록 함으로써 외부 온도 및 실내 부하 변동에 따른 실외열교환기의 온도를 유추하여 정확한 제상시간 및 시점을 결정하여 난방 가동율을 극대화시킬 수 있는 이점이 있다. The present invention relates to a defrosting operation control method of a combined air-conditioning and air conditioning, and to remove the frost formed on the outdoor heat exchanger due to the decrease in the outdoor temperature during the heating operation of the air-conditioning combined air conditioner that is not provided with the outdoor temperature sensor and the outdoor heat exchanger temperature sensor. Determining whether to enter the defrost by setting the defrost time by detecting the change in the temperature difference between the indoor temperature and the indoor heat exchanger, and by setting the defrost time by inferring the temperature of the outdoor heat exchanger according to the external temperature and the indoor load change to determine the exact defrost time and time There is an advantage that can maximize the heating operation rate.
Description
본 발명은 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것으로서, 보다 상세하게는 실외온도센서와 실외열교환기 온도센서가 구비되지 않은 냉난방 겸용 에어컨의 난방운전시 실외온도의 저하로 인한 실외열교환기에 형성되는 성애를 제거하기 위해 실내온도와 실내열교환기의 온도차의 변화를 감지하여 제상 진입여부를 판단하고 제상시간을 설정하도록 함으로써 외부 온도 및 실내 부하 변동에 따른 난방 가동율을 극대화시키기 위한 냉난방 겸용 에어컨의 제상운전 제어방법에 관한 것이다. The present invention relates to a defrosting operation control method of a combined air-conditioning and air conditioning, and more particularly, is formed in an outdoor heat exchanger due to a decrease in outdoor temperature during heating operation of a combined air-conditioning and air conditioner without an outdoor temperature sensor and an outdoor heat exchanger temperature sensor. Defrost operation by maximizing heating operation rate according to external temperature and indoor load fluctuation by detecting defrost entry and setting defrost time by detecting the change in temperature between indoor temperature and indoor heat exchanger to remove defrost. It relates to a control method.
일반적인 에어컨은 액체가 증발할 때 주위의 열을 흡수하는 현상을 이용하여 냉방작용을 하는 것으로서 이러한 냉방작용 이외에도, 제습작용을 함께 수행한다. 그런데, 냉난방 겸용 에어컨의 경우 냉방과 난방의 경우 냉매의 순환경로를 반대로 하여 난방운전시에는 실외의 열을 흡수하여 실내로 방출하게 되고, 냉방운전시에는 실내의 열을 흡수하여 실외로 방출하게 된다. In general, the air conditioner uses the phenomenon of absorbing the surrounding heat when the liquid evaporates, and performs cooling as well as dehumidification. By the way, in the case of air-conditioning combined air-conditioning and cooling and heating, the circulation path of the refrigerant is reversed so that the heat is absorbed and released into the room during the heating operation, and the heat is absorbed and released into the outdoor during the cooling operation. .
이와 같이 냉난방 겸용 에어컨의 난방운전시 실외열교환기에서 주위의 열을 흡수하는 증발과정시 실외열교환기 코일에 성에가 착상되기 때문에 이를 제거하기 위한 제상운전을 수행하게 된다. As the frost is formed on the outdoor heat exchanger coil during the evaporation process of absorbing the surrounding heat in the outdoor heat exchanger during the heating operation of the combined air-conditioning and air conditioning, the defrosting operation is performed to remove the frost.
도 1은 일반적인 냉난방 겸용 에어컨의 냉매순환도이다. 1 is a refrigerant circulation diagram of a general air-conditioning combined air conditioner.
여기에 도시된 바와 같이 실외기(20)는 냉매를 압축시키는 압축기(210)와, 압축기(210)의 출력단에 냉매의 순환 경로를 변경하기 위한 사방변(240)이 설치된다. 그리고, 일측이 사방변(240)과 연결되어 실외에서 열교환이 이루어지는 실외열교환기(40)와, 일측이 사방변(240)과 연결되어 실내에서 열교환이 이루어지는 실내열교환기(30)와, 실내열교환기(30)의 타측과 실외열교환기(40)의 타측간에 매개된 감압장치(50)로 이루어진다. As shown here, the outdoor unit 20 includes a compressor 210 for compressing a refrigerant, and four sides 240 for changing a circulation path of the refrigerant at an output end of the compressor 210. In addition, an outdoor heat exchanger 40 having one side connected to the four sides 240 to heat exchange outdoors, and an indoor heat exchanger 30 having one side connected to the four sides 240 performing heat exchange indoors, and indoor heat exchange The pressure reducing device 50 is provided between the other side of the device 30 and the other side of the outdoor heat exchanger 40.
그리고, 실내열교환기(30)에는 실내온도를 측정하는 실내온도센서(110)와, 실내열교환기(30)의 코일온도를 측정하는 실내열교환기 코일온도센서(120)가 설치되고, 실외열교환기(40)에는 실외온도를 측정하는 실외온도센서(260)와, 실외열교환기(40)의 코일온도를 측정하는 실외열교환기 코일온도센서(270)가 설치된다. In addition, the indoor heat exchanger (30) is provided with an indoor temperature sensor (110) for measuring the indoor temperature, and an indoor heat exchanger coil temperature sensor (120) for measuring the coil temperature of the indoor heat exchanger (30). 40, an outdoor temperature sensor 260 for measuring an outdoor temperature and an outdoor heat exchanger coil temperature sensor 270 for measuring a coil temperature of the outdoor heat exchanger 40 are installed.
위와 같은 냉난방 겸용 에어컨의 냉매순환경로를 살펴보면 다음과 같다. Looking at the coolant net environmental path of the air-conditioning combined air conditioning as described above are as follows.
먼저, 냉방운전시에는 즉, 실선 화살표로 나타낸 바와 같이 압축기에서 압축된 냉매는 사방변(240)에서 실외열교환기(40)로 흐르도록 경로를 설정함에 따라 실외열교환기(40)로 흘러 함유된 열을 방출한 후 감압장치(50)로 보내지고, 다시 실내열교환기(30)로 보내져 액체상태에서 기체상태로 증발되면서 주위의 열을 흡수하는 열교환이 이루어진 후 사방변(240)을 통해 다시 압축기(210)로 보내져 순환하게 된다. First, during the cooling operation, that is, the refrigerant compressed by the compressor as shown by the solid arrow is flowed into the outdoor heat exchanger 40 as the path is set to flow from the four sides 240 to the outdoor heat exchanger 40. After dissipating the heat is sent to the decompression device 50, and again to the indoor heat exchanger (30) is evaporated in a gaseous state in the liquid state is made of heat exchange to absorb the surrounding heat is made through the compressor again through the four sides (240) Sent to 210 to cycle.
이때, 실내에 설치된 실내열교환기(30)에서 주위의 열을 흡수하기 때문에 실내를 냉방하게 된다. At this time, since the indoor heat exchanger 30 installed in the room absorbs the surrounding heat, the room is cooled.
다음으로, 난방운전시에는 점선 화살표로 나타낸 바와 같이 압축기(210)에서 압축된 냉매는 사방변(240)에서 실내열교환기(30)로 흐르도록 경로를 설정함에 따하 실내열교환기(30)로 흘러 함유된 열을 방출한 후 감압장치(50)로 보내지고, 다시 실외열교환기(40)로 보내져 액체상태에서 기체상태로 증발되면서 주위의 열을 흡수하는 열교환이 이루어진 후 사방변(240)을 통해 다시 압축기(210)로 보내져 순환하게 된다.Next, during the heating operation, the refrigerant compressed by the compressor 210 flows to the indoor heat exchanger 30 as the refrigerant flows from the four sides 240 to the indoor heat exchanger 30 as shown by the dotted arrow. After dissipating the contained heat is sent to the decompression device 50, and again to the outdoor heat exchanger (40) is evaporated in a gaseous state in the liquid state is a heat exchange to absorb the surrounding heat is made through the four sides (240) It is sent back to the compressor 210 to circulate.
이때, 실내에 설치된 실내열교환기(30)에서 냉매에 함유된 열을 방출하기 때문에 실내를 난방하게 된다. At this time, since the heat contained in the refrigerant is released from the indoor heat exchanger 30 installed in the room, the room is heated.
위와 같이 이루어진 냉난방 겸용 에어컨의 난방운전시 실외열교환기(40)에서 주위의 열을 흡수하는 증발과정시 실외열교환기(40) 코일에 성에가 착상되기 때문에 이를 제거하기 위한 제상운전을 수행하게 된다. In the heating operation of the combined air-conditioning and air conditioning made as described above, the defrosting operation is performed to remove the frost on the coil of the outdoor heat exchanger 40 during the evaporation process of absorbing the surrounding heat from the outdoor heat exchanger 40.
따라서, 제상운전을 수행하기 위해서는 실외열교환기 온도센서(270)를 통해 실외열교환기의 온도가 빙점이하에서 일정시간 지속될 경우 제상운전을 수행하도록 하고 있다. Therefore, in order to perform the defrosting operation, the defrosting operation is performed when the temperature of the outdoor heat exchanger lasts for a predetermined time below the freezing point through the outdoor heat exchanger temperature sensor 270.
그러나, 최근의 소용량의 냉난방 겸용 에어컨에서는 실외온도센서(260)와 실외열교환기 온도센서(270)를 설치하기 위한 전기배선의 복잡함으로 인해 실외온도센서(260)와 실외열교환기 온도센서(270)를 설치하지 않고 실내온도센서(110)와 실내열교환기 온도센서(120)를 이용하여 제상운전시점을 판단하여 제상운전을 수행하고 있다. However, in recent years, in the small-capacity air-conditioning combined air conditioner, due to the complexity of the electrical wiring for installing the outdoor temperature sensor 260 and the outdoor heat exchanger temperature sensor 270, the outdoor temperature sensor 260 and the outdoor heat exchanger temperature sensor 270. Defrost operation is performed by using the indoor temperature sensor 110 and the indoor heat exchanger temperature sensor 120 to determine the defrosting operation time without installing the defrosting operation.
도 2는 종래의 냉난방 겸용 에어컨의 제상운전 제어방법을 설명하기 위한 흐름도이다. 2 is a flowchart illustrating a defrosting operation control method of a conventional air-conditioning combined air conditioner.
여기에 도시된 바와 같이 제상운전을 수행하기 위한 제상운전 시점을 판단하기 위해 먼저, 난방운전이 4시간동안 연속적으로 운전되었는가 판단한다(S10). 이때 난방운전이 4시간동안 연속적으로 운전되었을 경우에는 강제적으로 제상운전으로 수행하기 위해 실내온도와 실내열교환기의 코일온도의 온도차에 의한 제상운전 시간을 설정하게 된다(S16). In order to determine the defrosting operation time point for performing the defrosting operation as shown here, first, it is determined whether the heating operation has been continuously performed for 4 hours (S10). In this case, when the heating operation is continuously operated for 4 hours, the defrosting operation time is set by the temperature difference between the room temperature and the coil temperature of the indoor heat exchanger in order to force the defrosting operation (S16).
그러나, 4시간이 경과하지 않았을 경우에는 연속해서 30분 동안 연속해서 운전되었는가 비교한다(S12). However, when 4 hours have not elapsed, it is compared whether or not it has been operated continuously for 30 minutes continuously (S12).
이때 30분동안 연속해서 운전되었을 경우에는 실내온도(Tr)와 실내열교환기의 코일온도(Te)의 온도차가 17℃ 이하인가 비교한다(S14). In this case, when the operation is continuously performed for 30 minutes, the temperature difference between the room temperature Tr and the coil temperature Te of the indoor heat exchanger is compared with 17 ° C. or less (S14).
즉, 온도차가 17℃ 이하일 경우에는 온도차에 따라 제상운전시간을 설정한다(S16). That is, when the temperature difference is 17 degrees C or less, the defrosting operation time is set according to the temperature difference (S16).
예를들어, 온도차가 15℃이상일 경우에는 A분으로 설정하고, 온도차가 13℃보다 크고 15℃보다 작을 경우에는 B분으로 설정하고, 온도차가 13℃이하일 경우에는 C분으로 설정한다. For example, it is set to A minute when the temperature difference is 15 degreeC or more, to B minutes when the temperature difference is larger than 13 degreeC and less than 15 degreeC, and to C minute when the temperature difference is 13 degreeC or less.
그러나, 온도차가 17℃ 이상 차이날 경우에는 제상운전을 수행하지 않고 난방운전 경과시간을 비교하는 단계(S10)로 리턴된다. However, if the temperature difference is more than 17 ℃ difference is returned to the step (S10) for comparing the elapsed time of heating operation without performing the defrost operation.
이와 같이 실내온도(Tr)와 실내열교환기의 코일온도(Te)의 온도차가 적어지게 될 경우 실외열교환기에서 정상적으로 열교환이 이루어지지 않는 것으로 판단하고 제상운전을 수행하게 된다(S18).As such, when the temperature difference between the indoor temperature Tr and the coil temperature Te of the indoor heat exchanger decreases, it is determined that the heat exchange is not normally performed in the outdoor heat exchanger, and the defrosting operation is performed (S18).
이후 제상운전을 설정된 시간동안 수행하게 되면 제상운전을 중지하고 난방운전으로 복귀하게 된다(S20). Then, if the defrosting operation is performed for a set time, the defrosting operation is stopped and returned to the heating operation (S20).
이와 같이 실내온도(Tr)와 실내열교환기의 코일온도(Te)의 온도차에 의해 실외열교환기의 온도변화를 유추하여 제상운전을 수행하기 때문에 외기 온도 및 실내기의 부하변동에 대한 실외열교환기의 코일온도 변화를 제대로 감지하지 못하기 때문에 제상이 제대로 되지 않게 되면 실외기에 착상이 이루어지게 되어 실외기열교환기의 성능이 급격히 저하되어 제상운전을 위한 운전시간 설정이 어려운 문제점이 있다. As the defrosting operation is performed by inferring the temperature change of the outdoor heat exchanger by the temperature difference between the indoor temperature Tr and the coil temperature Te of the indoor heat exchanger, the coil of the outdoor heat exchanger with respect to the change of the outdoor air temperature and the load of the indoor unit. If the defrost is not properly detected because the temperature change is not properly made, the outdoor unit is implanted, and the performance of the outdoor heat exchanger is sharply degraded, which makes it difficult to set an operating time for the defrosting operation.
본 발명은 상기와 같은 문제점을 해결하기 위해 창작된 것으로서, 본 발명의 목적은 실외온도센서와 실외열교환기 온도센서가 구비되지 않은 냉난방 겸용 에어컨의 난방운전시 실외온도의 저하로 인한 실외열교환기에 형성되는 성애를 제거하기 위해 실내온도와 실내열교환기의 온도차의 변화를 감지하여 제상 진입여부를 판단하고 제상시간을 설정하도록 함으로써 외기 온도 및 실내 부하 변동에 따른 실외열교환기의 온도를 유추하여 정확한 제상시간 및 시점을 결정하여 난방 가동율을 극대화시키기 위한 냉난방 겸용 에어컨의 제상운전 제어방법을 제공함에 있다. The present invention was created to solve the above problems, and an object of the present invention is to form an outdoor heat exchanger due to a decrease in outdoor temperature during heating operation of a combined air conditioning and air conditioner that is not provided with an outdoor temperature sensor and an outdoor heat exchanger temperature sensor. Accurate defrost time by inferring the defrost entry and setting the defrost time by detecting the change of the temperature difference between the indoor temperature and the indoor heat exchanger to remove the defrosting And to provide a defrosting operation control method of a combined air conditioning and heating to maximize the heating operation rate by determining the timing.
상기와 같은 목적을 실현하기 위한 본 발명은 실외온도센서와 실외열교환기 온도센서가 구비되지 않은 냉난방 겸용 에어컨의 난방운전시 실외열교환기 코일에 형성되는 성애를 제거하기 위해 제상운전 시점을 판단한 후 설정시간 동안 사방변의 작동을 제어하여 냉매의 순환경로를 변경함으로써 제상운전을 수행하는 냉난방 겸용 에어컨의 제상운전 제어방법에 있어서, 난방운전이 제 1설정시간 동안 계속해서 운전되었는가 판단하는 단계와, 난방운전이 제 1설정시간 계속해서 운전되었을 경우 실내열교환기의 코일온도가 제 1설정온도 이하인가 판단하는 단계와, 실내열교환기의 코일온도가 제 1설정온도 이하일 경우 실내온도와 실내열교환기의 코일온도의 온도차가 제 2설정온도 이하인가 판단하는 단계와, 실내온도와 실내열교환기의 코일온도의 온도차가 제 2설정온도 이하일 경우 제 2설정시간 간격으로 온도차의 변화를 측정하는 단계와, 측정된 온도차의 변화를 통해 제상운전 시간을 설정하는 단계와, 설정된 제상운전 시간동안 제상운전을 수행하는 단계로 이루어진 것을 특징으로 한다. The present invention for realizing the above object is set after determining the defrosting operation time to remove the frost formed in the outdoor heat exchanger coil during the heating operation of the combined air-conditioning and air conditioner without the outdoor temperature sensor and the outdoor heat exchanger temperature sensor In the defrosting operation control method of a combined air-conditioning and air-conditioning which performs defrosting operation by changing the circulating path of the refrigerant by controlling the operation of the four sides for a time, determining whether the heating operation is continuously operated for the first set time, and the heating operation Determining whether the coil temperature of the indoor heat exchanger is less than or equal to the first set temperature when the first set time is continuously operated; and if the coil temperature of the indoor heat exchanger is less than or equal to the first set temperature, the indoor temperature and the coil temperature of the indoor heat exchanger are determined. Determining whether the temperature difference is equal to or less than the second set temperature, and the room temperature and the coil temperature of the indoor heat exchanger. Measuring a change in temperature difference at a second predetermined time interval when the temperature difference is less than the second set temperature, setting a defrosting operation time by changing the measured temperature difference, and performing a defrosting operation during the set defrosting operation time. Characterized in that consisting of.
위에서 제 1설정온도는 45℃ 인 것을 특징으로 한다. The first set temperature is characterized in that 45 ℃.
또한, 제 2설정온도는 17℃ 인 것을 특징으로 한다. In addition, the second set temperature is characterized in that 17 ℃.
또한, 제 1설정시간은 4시간인 것을 특징으로 한다. In addition, the first preset time is characterized by four hours.
또한, 온도차의 변화를 측정하기 위한 제 2설정시간 간격은 15분 간격인 것을 특징으로 한다. In addition, the second predetermined time interval for measuring the change in temperature difference is characterized in that the interval 15 minutes.
또한, 제상운전 시간을 설정하는 단계에서 상기 제 2설정시간 간격으로 측정된 실내온도와 실내열교환기의 코일온도의 온도차가 계속해서 작아질 경우 제상운전 시간을 설정하는 것을 특징으로 한다. In the setting of the defrosting operation time, the defrosting operation time may be set when the temperature difference between the room temperature measured at the second set time interval and the coil temperature of the indoor heat exchanger continues to decrease.
위와 같이 이루어진 본 발명은 실내열교환기의 코일온도가 제 1설정온도 이하일 경우 실내온도와 실내열교환기의 코일온도의 온도차를 일정한 시간간격으로 측정하여 온도차 변화를 구함으로써 온도차가 시간이 지남에 따라 커지게 될 경우 제상운전 시간을 설정한 후 설정된 제상운전 시간동안 제상운전을 수행함으로써 난방 가동율을 극대화하게 된다. According to the present invention made as described above, if the coil temperature of the indoor heat exchanger is less than the first set temperature, the temperature difference is increased over time by measuring the temperature difference between the indoor temperature and the coil temperature of the indoor heat exchanger at a predetermined time interval. If it loses, the defrosting operation time is set and then the defrosting operation is performed during the set defrosting operation time to maximize the heating operation rate.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 또한 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시된 것이며 종래 구성과 동일한 부분은 동일한 부호 및 명칭을 사용한다. Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.
도 3은 본 발명에 의한 냉난방 겸용 에어컨의 제상운전 제어방법을 설명하기 위해 순차적으로 도시한 흐름도이다. 3 is a flowchart sequentially illustrating a method of controlling a defrosting operation of a combined air conditioning and air conditioner according to the present invention.
여기에 도시된 바와 같이 냉난방 겸용 에어컨이 난방운전을 제 1설정시간은 4시간 동안 연속해서 운전되었는가 판단한다(S22). 그런다음 난방운전이 4시간 연속해서 운전되었을 경우 실내열교환기의 코일온도(Te)가 제 1설정온도인 45℃ 이하인가 판단한다(S24). As shown here, it is determined whether the combined air-conditioning and air-conditioning unit has been operated continuously for the first set time for 4 hours (S22). Then, when the heating operation is operated continuously for 4 hours, it is determined whether the coil temperature Te of the indoor heat exchanger is 45 ° C. or lower, which is the first set temperature (S24).
이와 같이 실내열교환기의 코일온도(Te)가 제 1설정온도보다 낮아지기 시작할 경우 열교환이 정상적으로 이루어지지 않는 것으로써 제상운전 시점을 판단하기 위해 실내온도(Tr)와 실내열교환기의 코일온도(Te)의 온도차를 계산하여 제 2설정온도인 17℃이하인가 판단한다(S26). As such, when the coil temperature Te of the indoor heat exchanger starts to be lower than the first set temperature, heat exchange is not performed normally, so that the indoor temperature Tr and the coil temperature Te of the indoor heat exchanger are determined to determine the defrosting operation time. The temperature difference is calculated to determine whether the second set temperature or less than 17 ℃ (S26).
즉, 온도차가 적을수록 실내온도(Tr)가 높거나 실내열교환기의 코일온도(Te)가 낮은 것으로써 열교환이 정상적으로 이루어지지 않은 것으로 판단하게 된다. In other words, the smaller the temperature difference, the higher the indoor temperature Tr or the lower the coil temperature Te of the indoor heat exchanger.
실내온도(Tr)와 실내열교환기의 코일온도(Te)의 온도차가 17℃이하일 경우 온도차의 변화를 측정하기 위해 제 2설정시간 간격으로 온도차를 측정한 후 온도차의 변화를 판단한게 된다(S28)(S30). When the temperature difference between the room temperature Tr and the coil temperature Te of the indoor heat exchanger is 17 ° C. or less, the temperature difference is measured at a second set time interval to measure the change in temperature difference (S28). (S30).
즉, 15분 후에 측정된 온도차(ΔT1)와 30분 후에 측정된 온도차(ΔT2)의 변화를 판단하여 실내온도(Tr)와 실내열교환기의 코일온도(Te)의 온도차가 17℃ 이하더라도 계속해서 온도차가 커지고 있을 경우에는 제상운전을 수행하지 않더라도 열교환이 정상적으로 회복되고 있는 것으로 판단하여 제상운전을 수행하지 않도록 하고 온도차가 계속해서 작아지고 있을 경우에는 열교환이 정상적으로 이루어지지 않고 있는 것으로 판단하여 제상운전을 수행하게 된다(S32). That is, the temperature difference (ΔT1) measured after 15 minutes and the temperature difference (ΔT2) measured after 30 minutes are judged, so that even if the temperature difference between the room temperature (Tr) and the coil temperature (Te) of the indoor heat exchanger is less than 17 ° C, If the temperature difference is increasing, it is judged that the heat exchange is recovering normally even though the defrosting operation is not performed. If the temperature difference continues to decrease, it is judged that the heat exchange is not performed normally. It is performed (S32).
이와 같이 외기 온도의 변화나 실내 부하의 변동에 따라 온도차의 변화가 발생할 경우 이를 감지하여 정확한 제상운전 시점과 제상운전 시간을 설정하도록 한다. As such, when a change in temperature occurs due to a change in outside temperature or a change in an indoor load, the controller detects this and sets an accurate defrosting operation time and a defrosting operation time.
이때 제상운전을 수행하기 위한 제상운전 시간을 설정하기 위해 온도차의 변화에 따라 제상운전시간은 다르게 설정된다(S34). At this time, the defrosting operation time is set differently according to the change of the temperature difference to set the defrosting operation time for performing the defrosting operation (S34).
즉, 온도차의 변화(ΔT)가 0℃∼2℃ 차이가 날 경우 제상운전 시간을 A분으로 설정하고, 온도차의 변화(ΔT)가 2℃∼4℃ 차이가 날 경우 제상운전 시간을 B분으로 설정하고, 온도차의 변화(ΔT)가 4℃∼6℃ 차이가 날 경우 제상운전 시간을 C분으로 설정하게 된다. That is, if the change of temperature difference (ΔT) is different from 0 ° C to 2 ° C, the defrosting operation time is set to A minute. If the change of temperature difference (ΔT) is different from 2 ° C to 4 ° C, the defrosting operation time is B minute. If the change (ΔT) of the temperature difference is 4 ℃ ~ 6 ℃ difference, the defrosting operation time is set to C minutes.
따라서, 제상운전 시간동안 제상운전을 수행하여 제상한 후 난방운전으로 복귀하여 난방운전을 수행하게 된다(S36). Therefore, after the defrosting operation is performed during the defrosting operation time, the defrosting operation is performed to return to the heating operation to perform the heating operation (S36).
상기한 바와 같이 본 발명은 실외온도센서와 실외열교환기 온도센서가 구비되지 않은 냉난방 겸용 에어컨의 난방운전시 실외온도의 저하로 인한 실외열교환기에 형성되는 성애를 제거하기 위해 실내온도와 실내열교환기의 온도차의 변화를 감지하여 제상 진입여부를 판단하고 제상시간을 설정하도록 함으로써 외기 온도 및 실내 부하 변동에 따른 실외열교환기의 온도를 유추하여 정확한 제상시간 및 시점을 결정하여 난방 가동율을 극대화시킬 수 있는 이점이 있다. As described above, the present invention provides the indoor temperature and the indoor heat exchanger to remove the frost formed in the outdoor heat exchanger due to the decrease in the outdoor temperature during the heating operation of the combined air-conditioning and air conditioner without the outdoor temperature sensor and the outdoor heat exchanger temperature sensor. Determination of entry of defrost by sensing the change of temperature difference and setting of defrost time to infer the temperature of outdoor heat exchanger according to fluctuation of outdoor temperature and indoor load to determine accurate defrost time and time to maximize heating operation rate There is this.
도 1은 일반적인 냉난방 겸용 에어컨의 냉매순환도이다. 1 is a refrigerant circulation diagram of a general air-conditioning combined air conditioner.
도 2는 종래의 냉난방 겸용 에어컨의 제상운전 제어방법을 나타낸 흐름도이다. Figure 2 is a flow chart showing a defrosting operation control method of a conventional air-conditioning combined air conditioner.
도 3은 본 발명에 의한 냉난방 겸용 에어컨의 제상운전 제어방법을 나타낸 흐름도이다. 3 is a flowchart illustrating a method for controlling defrosting of a combined air conditioning and air conditioner according to the present invention.
- 도면의 주요부분에 대한 부호의 설명 - -Explanation of symbols for the main parts of the drawings-
30 : 실내열교환기 40 : 실외열교환기 30: indoor heat exchanger 40: outdoor heat exchanger
110 : 실내온도센서 120 : 실내열교환기 코일온도센서110: room temperature sensor 120: indoor heat exchanger coil temperature sensor
140 : 실내팬 210 : 압축기140: indoor fan 210: compressor
240 : 사방변 260 : 실외온도센서240: four sides 260: outdoor temperature sensor
270 : 실외열교환기 코일온도센서 270: Coil temperature sensor of outdoor heat exchanger
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0045401A KR100484968B1 (en) | 2002-07-31 | 2002-07-31 | Method for defrosting operation of air-conditioner used both cooler and heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0045401A KR100484968B1 (en) | 2002-07-31 | 2002-07-31 | Method for defrosting operation of air-conditioner used both cooler and heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20040012046A KR20040012046A (en) | 2004-02-11 |
| KR100484968B1 true KR100484968B1 (en) | 2005-04-25 |
Family
ID=37320070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2002-0045401A KR100484968B1 (en) | 2002-07-31 | 2002-07-31 | Method for defrosting operation of air-conditioner used both cooler and heater |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100484968B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279698A (en) * | 2014-09-28 | 2015-01-14 | 芜湖美智空调设备有限公司 | Mobile air conditioner and defrosting control method thereof |
| CN110470011A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470007A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470025A (en) * | 2019-08-04 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470019A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100606275B1 (en) * | 2004-12-29 | 2006-08-01 | 위니아만도 주식회사 | Defrosting control method of air-conditioner used both cooler and heater |
| KR100957178B1 (en) * | 2008-01-25 | 2010-05-11 | 위니아만도 주식회사 | Method of controlling defrosting of air conditioner |
| SG11201500570WA (en) * | 2012-07-31 | 2015-04-29 | Carrier Corp | Frozen evaporator coil detection and defrost initiation |
| CN105402855B (en) * | 2015-12-08 | 2018-02-02 | 芜湖美智空调设备有限公司 | The control method and air conditioner of air conditioner |
| CN105423493B (en) * | 2015-12-08 | 2018-02-02 | 芜湖美智空调设备有限公司 | The control method and air conditioner of air conditioner |
| CN109724225B (en) * | 2019-01-02 | 2020-09-08 | 四川长虹空调有限公司 | Method for improving heat exchange performance of outdoor unit of direct-current variable-frequency air conditioner based on temperature difference detection |
| CN113266922B (en) * | 2021-05-28 | 2022-03-25 | 中山市爱美泰电器有限公司 | Defrosting control method of heat pump |
| CN113294891B (en) * | 2021-06-18 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, electronic equipment and storage medium |
| CN113587365A (en) * | 2021-06-30 | 2021-11-02 | 重庆海尔空调器有限公司 | Frost prevention method, electronic device, and storage medium |
| CN114216214B (en) * | 2021-12-22 | 2023-05-12 | 宁波奥克斯电气股份有限公司 | Self-cleaning control method and device and air conditioner |
| CN115307273A (en) * | 2022-08-16 | 2022-11-08 | 珠海格力电器股份有限公司 | Defrosting control method and device based on fuzzy algorithm, air conditioner and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191439A (en) * | 1984-10-11 | 1986-05-09 | Matsushita Electric Ind Co Ltd | Defrosting control system of heat pump type air conditioner |
| JPS62119345A (en) * | 1985-11-18 | 1987-05-30 | Matsushita Electric Ind Co Ltd | Defrosting device of air conditioner |
| KR970059629A (en) * | 1996-01-29 | 1997-08-12 | 구자홍 | Air conditioner defrosting method |
-
2002
- 2002-07-31 KR KR10-2002-0045401A patent/KR100484968B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191439A (en) * | 1984-10-11 | 1986-05-09 | Matsushita Electric Ind Co Ltd | Defrosting control system of heat pump type air conditioner |
| JPS62119345A (en) * | 1985-11-18 | 1987-05-30 | Matsushita Electric Ind Co Ltd | Defrosting device of air conditioner |
| KR970059629A (en) * | 1996-01-29 | 1997-08-12 | 구자홍 | Air conditioner defrosting method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279698A (en) * | 2014-09-28 | 2015-01-14 | 芜湖美智空调设备有限公司 | Mobile air conditioner and defrosting control method thereof |
| CN110470011A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470007A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470019A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470025A (en) * | 2019-08-04 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040012046A (en) | 2004-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100484968B1 (en) | Method for defrosting operation of air-conditioner used both cooler and heater | |
| KR20010092356A (en) | Method for controlling an electronic expansion valve based on cooler pinch and discharge superheat | |
| CN108779939B (en) | Refrigerating device | |
| KR100957178B1 (en) | Method of controlling defrosting of air conditioner | |
| KR100689897B1 (en) | Method for defrosting operation of air-conditioner used both cooler and heater | |
| KR20030065970A (en) | Method for driving control of low temperature of electronic refrigerator | |
| KR100502302B1 (en) | Method for defrosting operation of air-conditioner used both cooler and heater | |
| KR100522879B1 (en) | The method operating against frosting of air-conditioner used both cooler and heater | |
| KR100233015B1 (en) | Apparatus for refrigerant shortage detection of air conditioner | |
| KR100357465B1 (en) | Method for defrosting operation of air-conditioner used both cooler and heater | |
| JP3504188B2 (en) | refrigerator | |
| KR100606275B1 (en) | Defrosting control method of air-conditioner used both cooler and heater | |
| CN112303814B (en) | Air conditioner and air conditioner defrosting method | |
| KR100502310B1 (en) | Method for setting temperature program logic for controlling a motor of outdoor of air-conditioner | |
| KR20060066439A (en) | Outdoor fan control method of air conditioner | |
| KR20060035242A (en) | A outdoor conditioner fan motor control method in cooling operation | |
| KR100519313B1 (en) | Defrosting control method for heat exchanger in outer unit of airconditioner | |
| KR100421618B1 (en) | Method for operating load match of refrigerator | |
| KR100606267B1 (en) | Air conditioner capable of continuous cooling operation | |
| KR100446756B1 (en) | Fan control method for inverter air conditioner | |
| KR200405714Y1 (en) | Heat-pump type heating apparatus | |
| Riviere et al. | A new installation for part load testing of air to water single stage chillers and heat pumps | |
| JP2000104975A (en) | Air conditioner | |
| KR100459365B1 (en) | Method for controlling blowoff direction of air-conditioner used both cooler and heater | |
| KR20050074182A (en) | A indoor fan control method of air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment | ||
| FPAY | Annual fee payment | ||
| FPAY | Annual fee payment |
Payment date: 20170323 Year of fee payment: 13 |
|
| FPAY | Annual fee payment |
Payment date: 20180321 Year of fee payment: 14 |